What I'm about to outline is essentially against best practice and SSZ practice, but it does work.
Typically I will have my TM do the following;
1) Break electronics (not MMB) up into 3 parts, set up carts for each of the 3 blocks
2) Have your flow TL set up separate custom blocks for MMB and Elec, so that MMB can be sorted separately from the truck.
3) Break out your security, audit, and push it as the truck is being unloaded, most of the time you will be able to keep up with it. By the time the unload is done, your security will also be almost complete.
4) Breakout your repacks into the carts.
5) Push your non MMB product, backstock your security, and move on to MMB.
MMB
1) Set up 2 carts, 1 for push, 1 for backstock. Remember a lot of your dvds will have different locations (Checklanes, Value Endcap) or be direct backstock because they are not set yet (Streetdates.)
2) Scan through your dvds and cds, sort them into aisles or secondary locations. Send any unset product to be backstocked.
3) Push your MMB.
This seems like a lot of overhead, but remember, the faster you get AWAY from the electronics boat, the less guest time you are putting in. Breaking out all of the product helps you to minimize footsteps and save time. If you are a 730 process, you will likely need 2 TM's to push electronics, because of the guest impacting your push times. If this is the case, the second person can push MMB after the unload, while the first TM focuses on non MMB and servicing guests.
If your store has a Target mobile rep in the AM, they may help you do things like case blu-rays etc, if they are bored.
Good luck!